Repair holes in leather of climbing shoes

I have blown out the leather near my smallest toe knuckles in a pair of FiveTen Moccasyms. How do I do a robust repair? My thought was to put tape on the inside and then use Aquaseal on the outside and let it cure. I'm not sure if this is a good/robust approach...

Best fix is preventative. Apply urethane based Seam Grip sealer to uppers before your uppers get wear (sometime before or immediately after break in. Clean and reapply Seam grip as needed when wear spots appear to be getting close to leather. That said, Gear Aid patch tape and sealant might be your best shot at repair. clean thoroughly before application.

You're kinda hosed on trying to repair that. Just like John C said, best is preventative.

You could TRY a soft textile aquasealed to the interior of the shoe. But considering how much salt and grime the interior of a climbing shoe soaks up the bonding will probably end up meh. 

Andrew Mark wrote: I have blown out the leather near my smallest toe knuckles in a pair of FiveTen Moccasyms. How do I do a robust repair? My thought was to put tape on the inside and then use Aquaseal on the outside and let it cure. I'm not sure if this is a good/robust approach...

I did this exact repair down at the creek this spring and it worked fairly well. I used seam grip but it’s all about the same. I also started taping the toe and that helped (from a climbing comfort perspective, not from a shoe longevity perspective)

Thanks for the helpful info. Sounds like it's worth trying the repair. The toe tape sounds like a pretty good idea too. 

This worked really well for me. Take a patch of heavy canvas and coat one side with Shoe Goo. Stick it over the hole, inside the shoe. Then put wax paper inside and out of the repair and clamp it with something. I used C clamps and two little pieces of wood. Let it set overnight.